Dover District Council

Tree preservation zone

There is a problem

• 242 entries have reference values that are not unique

entry: undefined

• Endpoint URL: https://services-eu1.arcgis.com/xk4RA36G57mVH7Aw/ArcGIS/rest/services/TPO_National_Planning_Map_view/FeatureServer/0/query?where=1%3D1&f=geojson&outFields=*
• Row: 259
• reference: TPO/63/00001/1/1

  Reference must be unique in resource

How to fix this issue

Your dataset is missing the reference column.

The Tree preservation zone guidance explains how to fix the issue:

reference

A reference or ID for each tree preservation zone that is:

• unique within your dataset
• permanent - it doesn’t change when the dataset is updated If you don’t use a reference already, you will need to create one. This can be a short set of letters or numbers.

Example: TPO1

How to improve Dover District Council’s data

1. Fix the errors indicated
2. Use the check service to make sure the data meets the standard
3. Publish the updated data on the endpoint URL